trans starts out in drive (3rd) when u manualy shift to low gear its locked up. will not move in low but will take off in 2nd or 3rd when shifted manualy.

 

I would start by hooking a psi gage on it & see where your at.

 

Check your vacuum modulator on the passenger's side of the tranny. Sounds like you might not have your vacuum line hooked up or it may be kinked or have a leak in the system. A lot of times that line will come off the modulator and cause problems like you're describing.

 

i need somebody who knows what thier talking about the psi idea is a good start but the modulator (please get real) the trans will still engage manually even with bad modulator it only aids in shifting this is a tci manual shift tranny

 

My bad. It's just kind of hard to understand questions from someone who doesn't know how to use punctuation, capitalization, grammar, etc. Are you saying it has a manual valve body and, if so, why are you trying to start out in 3rd?

 

question first is it lockedd up in manuel first or just won't start in that position, if it is locked that is a different problem but if just won't start then you probably have a bad seal in your clutch pack or bad clutches, or possibly a bad sprag, without driving it, it's a little hard to diagnoss but either case it is an internal problem, and you are going to have to tear it down to fix it.
If its locked up it's most likely in the valve body, and is trying to put in 2 gears at the same time like a transbrake does.

 

i changed valve bodys does the same thing. when i aply air to rear clutch pack u can hear it engage no leaks . the front to u can hear engage but i hear air escaping.

 

well there is your answer the seal is blown on the piston for the clutch pack, and that is your first gear.

 

Maby the wave plate gave out ?

 

thanks for your help guys